MTL - Rebirth of a Supermodel - Chapter 154

Orlax Tirshtain is the villain in the global game [Unification of Empires]. The tyrannical, cold-blooded emperor is a man who slaughtered his own family with his own hands and ascended the throne with their blood—a power-obsessed madman. Despite five years having passed since the game’s release, no one has been able to defeat this lunatic. So, how the hell did I become this damned?????

[NO. 4212: ‘Humanity’ has failed the Demotion Match.] [NO. 4212: ‘Humanity’ has been deemed useless. Beginning deletion.] As Earth was being erased after their final game ended in failure, Martial Saint Sung JiHan managed to resist deletion and saw messages pop up in front of him. [To think someone would be able to resist being erased.] [Let’s give him an opportunity to re-challenge.] [Player ‘Sung JiHan’ is returning to the time of initial entry in The League.] When he woke back up, he had regressed back in time. Given a second chance, he swore to himself to stop the fall of Korea and humanity and take flawless vengeance against those that ruined things in his original timeline.

Follow the journey of Korea’s Martial Saint, Sung Jihan, as he struggles to prevent a future of destruction and ascends as the Martial God!

“They only call me mad because they're unable to comprehend me.”After recovering from trauma, Dan was just about to reconnect with the world when some cursed force yanked him into another world without warning.He became, Jules Evanava, a similarly traumatized minor character from the novel, Aftermath of Destroyed Worlds.Jules was now the heir to the strongest clan in the world, thanks to their esteemed, world-balance-altering artifact—but there were thorny strings attached.On the same day he arrived, he was thrown into a mission meant to end with his death.Yet he survived, seizing the Archangel of War’s power in a gamble with death—high risk, higher reward.Blood Manipulation, the Crimson Sigil, War Forged—a sentient sword—and Bloodlust Control were just the beginning. There was more to come. So much more.And with each new power and growth, something in him cracked. Sanity frayed, slowly but surely, as Jules danced closer to the edge of madness.Now, with enemies in his own clan and chaos rising across multiple lands—and even space—Jules must navigate a brutal world on the edge of collapse.Armed with the novel's knowledge and his growing abilities, Jules was going to survive it all—even if he had to become the very madness they struggled to understand.

In novels with a stud there is always a Senior Martial Brother like this:

In the early stages of the novel, his innate talent is high, his cultivation is good, his appearance is handsome, and he has an intelligent, cute younger Martial Sister as a fiancée.

In the middle stages of the novel, he is caught unprepared and defeated by a young disciple (the protagonist) in the sect who’s hardly remarkable at all. From then on, he falls from his godly altar and loses his brilliance. Even his young Martial Sister leaves him for someone else.

In the late stages of the novel, he continues to turn dark, going down the Demonic Path and becoming the major villainous boss. However, the protagonist still ruthlessly defeats him and his soul is eternally sealed.

Once Qin Mo opened his eyes, he discovered that he had become this Senior Martial Brother.

- Description from Novelupdates